code: def __str__(self):
      assert len(self.args) == 1
      return f"config type for {self.args[0]} not supported"
  
imports: import logging
  import os
  from guild import guildfile
  from guild import op_util
  from guild import plugin
  from guild import util
  from .None import flags_import_util
label_desc: Use image node_id 1 for calling the _ConfigNotSupported obj's underlying member method code with example usage: obj.__str__() and returns: str, self, str